Science 7: Cell Processes And Energy (Guided Reading And Study)

Front 1

Steps in Photosynthesis

Back 1

--Sunlight Strikes Leaf;
--Chlorophyll captures light energy
--Cells use the energy to produce sugars and oxygen from water and carbon dioxide.

Front 2

In the process of photosynthesis, plants use the energy in ____________ to make food.

Back 2

Sunlight

Front 3

How does grass use energy from the sun.

Back 3

Autotroph; directly

Front 4

How does a zebra use energy from the sun?

Back 4

heterotroph; indirectly

Front 5

How does a lion use energy from the sun?

Back 5

heterotroph; indirectly

Front 6

List two stages in the process of photosynthesis.

Back 6

1. Capturing the sun's energy;
2. Producing sugars.

Front 7

The green pigment in chloroplasts, called _________, absorbs light energy from the sun.

Back 7

chlorophyll

Front 8

Is the following sentence true or false? Besides the energy in sunlight, the cell needs water and carbon dioxide to make sugar.

Back 8

true

Front 9

What are stomata?

Back 9

Stomata are small openings on the undersides of the leaves through which carbon dioxide enters the plant.

Front 10

What are products of photosynthesis?

Back 10

a. carbon dioxide
b. glucose
c. water*****
d. oxygen*******

Front 11

Is the following true or false? Photosynthesis produces the carbon dioxide that most living things need to survive.

Back 11

false

Front 12

Write the chemical equation for the process of photosynthesis.

Back 12

6 CO2 + 6 H20------
C6H12)6 = 6 )2

Front 13

What word does the arrow in the chemical equation stand for?

Back 13

yields

Front 14

List the letter of each raw material of photosynthesis.

Back 14

a. carbon dioxide***
b. glucose
c. water****
d. oxygen

Front 15

List the letter that is true about the products of photosynthesis.

Back 15

a. Plants cells use the sugar from food.******
b. some of the sugar is made into other compounds, such as cellulose.****
c. Some of the sugar is stored in the plant's cells for later use.*****
d. Extra sugar molecudes pass out of the plant through the stomata.

Front 16

Fill in the blanks in the photosynthesis equation

ps

Back 16

1. carbon
2. water -----
3. sugar
4. oxygen

Front 17

What are the raw materials of photosynthesis?

ps

Back 17

Carbon dioxide and water

Front 18

Why is sunlight written above the arrow in the equation, rather than on either side of it?

ps

Back 18

Because sunlight provides the energy for the reaction but is neither a raw material nor a product of the reaction.

Front 19

Where does photosynthesis occur?

ps

Back 19

In the chloroplasts of plants and some other organisms, such as algae and some bacteria.

Front 20

Fill in the blank:
The process by which a cell captures the energy in sunlight and uses it to make food is called_____________

ps

Back 20

photosynthesis

Front 21

_____________ are colored chemical compounds that absorb light.

ps

Back 21

Pigments

Front 22

The main pigment found in the chloroplasts of plants is __________________.

ps

Back 22

chlorophyll

Front 23

__________________ are small openings on the undersides of leaves through which carbon dioxide enters a plant.

ps

Back 23

stomata

Front 24

An organism that makes its own food is a(n) ________________.

ps

Back 24

autotroph

Front 25

A(n) ________________ is an organism that cannot makes its own food.

ps

Back 25

heterotroph

Front 26

What is respiration?


r

Back 26

Respiration is breathing in oxygen by an organism because oxygen is needed by cells.

Front 27

What happens during respiration?


r

Back 27

Cells break down simple food molecules such as sugar and release the energy they contain.

Front 28

Cells store energy in the form of __________________.


r

Back 28

carbohydrates

Front 29

How do cells "withdraw" energy?


r

Back 29

Cells break down carbohydrates to get energy.

Front 30

Is the following true or false? Respiration that takes place inside of cells is the same as breathing air in and out of lungs.

Back 30

False

Front 31

What are the raw materials of respiration?

Back 31

sugar, oxygen

Front 32

What are the products of respiration?

Back 32

carbon dioxide, water, energy

Front 33

What is the first stage of respiration.

Back 33

Takes place in the cytoplasm;
Glucose molecules are broken down

Front 34

What is the second stage of respiration?

Back 34

Takes place in the mitochondria;
oxygen is involved

Front 35

What takes place in both the first and second stages of respiration.

Back 35

Energy is released

Front 36

What is fermentation?


r

Back 36

Fermentation is an energy-releasing process that does not require oxyten.

Front 37

Is the following true or false?

Back 37

Feermentation releases more energy than respiration. False

Front 38

List two types of fermentation and tell were each takes place.

r

Back 38

Alcoholic fermentation occurs in yeast.
Lactic-acid fermentation occudr in muscle cells in the body.

Front 39

What are the raw materials of respiration?

Back 39

glucose
carbon dioxide

Front 40

What are the products of respiration?

Back 40

oxygen
water
energy

Front 41

Where in the cell doees the first stage of respiration take place?

Back 41

In the cytoplasm

Front 42

where in the celll does the second stage of respiration take place?

Back 42

In the mitochondria.

Front 43

How does fermentation differ from respiration?

Back 43

Fermentation does not require oxygen, while respiration does.
It produces less energy than respiration.

Front 44

Which type of fermentation occurs in yeast? (remember Monkey bread)

r

Back 44

Alcoholic fermentation

Front 45

Which type of fermentation sometimes occurs in human muscle cells?

Back 45

lactic-acid feermentation

Front 46

True or false:
The process by which cells "withdraw" energy from glucose is called "photosynthesis."

Back 46

False.
It is called respiration

Front 47

True or false
"Respiration" provides energy for cells without using oxygen.

Back 47

False.
Fermentation

Front 48

What are the steps in photosynthesis?

Back 48

--Sunlight strikes a leaf;
--Chlorophyll captures light energy;
--Cells use energy to produce sugars and oxygen from water and carbon dioxide.